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What Lights the Universe’s Standard Candles?
Type Ia supernovas are astronomers’ best tools for measuring cosmic distances. In a first, researchers have managed to re-create one on a supercomputer, giving a boost to a leading hypothesis for how they form.
Researchers Discover a More Flexible Approach to Machine Learning
“Liquid” neural nets, based on a worm’s nervous system, can transform their underlying algorithms on the fly, giving them unprecedented speed and adaptability.
How Our Reality May Be a Sum of All Possible Realities
Richard Feynman’s path integral is both a powerful prediction machine and a philosophy about how the world is. But physicists are still struggling to figure out how to use it, and what it means.
Mathematicians Eliminate Long-Standing Threat to Knot Conjecture
A new proof shows that a knot some thought would contradict the famed slice-ribbon conjecture doesn’t.
How Quantum Physicists ‘Flipped Time’ (and How They Didn’t)
Two teams have made photons act as if time were simultaneously flowing in two directions. The experiments demonstrate a way to potentially boost the performance of quantum devices.
Mathematicians Roll Dice and Get Rock-Paper-Scissors
Mathematicians have uncovered a surprising wealth of rock-paper-scissors-like patterns in randomly chosen dice.
Mobile Genes From the Mother Shape the Baby’s Microbiome
Tiny genetic sequences in a mother’s bacteria seem to hop into the infant’s bacteria, perhaps ensuring a healthy microbiome later in life.
New Algorithm Closes Quantum Supremacy Window
Random circuit sampling, a popular technique for showing the power of quantum computers, doesn’t scale up if errors go unchecked.
Inside Ancient Asteroids, Gamma Rays Made Building Blocks of Life
A new radiation-based mechanism adds to the ways that amino acids could have been made in space and brought to the young Earth.